MCQOPTIONS
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| 1. |
High concentration of which of the following in atmosphere leads to stiffness of flower buds which eventually fall off from plants? |
| A. | \[N{{O}_{2}}\] |
| B. | \[S{{O}_{2}}\] |
| C. | CFC |
| D. | Smog |
| Answer» C. CFC | |